IVS102 Series
HVAC Variable Speed Drives
File No:
5-2
Date:
february, 2015
Supersedes: 5-2
Date:
august 2010
IVS Sensorless Series
Meeting your
Sustainability
Objectives for New and
Existing Buildings.
Sustainable building challenges
Sustainable buildings, whether new or existing, are a higher
priority than ever before. The need for better energy performance in buildings is driven not only by individual concerns
for the environment but also by increasing legislative pressures such as part l of the building regulations and the eu
Energy Performance of Buildings Directive. The challenges
that face building services professionals include the need
to achieve good epc (Energy Performance Certificate) and
breeam ratings while designing heating and cooling systems
that meet occupancy comfort needs.
The implications of poorly performing buildings
Designing and operating buildings using practices and technologies of the past will have major implications for your business regardless of whether you are a system designer, contractor, end user or any other profession involved with building services systems. Poorly designed and inefficient buildings
lead not only to higher utility bills but also to dissatisfied
occupants and high maintenance costs. Low building energy
ratings will likely impact the sale or rentable value of the
building. For organisations with highly visible csr (Corporate
Social Responsibility) programs, low energy ratings can also
have a negative impact on brand image and customer retention and acquisition.
Improved performance in heating and cooling
systems
Traditional heating and cooling systems were designed such
that at part load conditions, where heating or cooling demand
is reduced, control valves would divert the flow of water
around the heating or cooling load, leaving the system pump
to continue producing full design flow even though the system
didn’t require it. This design, incorporating constant speed
pumps, results in significant energy wastage. Life cycle cost
analysis identifies that typically 95% of the lifetime cost of a
pump is energy cost, which makes a clear case for investing in
a more efficient pump design.
In recent years the reduced cost and improved reliability
of variable speed drives (vsd) has led to changes in design
approach where the pump speed is adjusted in response to
changes in demand. This in turn leads to significant energy
savings, improved occupancy comfort, better plant control
and reduced maintenance.
Armstrong has many years of experience in the area of variable speed pumping and offers significant added value to
designers, installers and end users through product solutions
such as the award-winning ivs Sensorless range of integrated
variable speed pumps. Armstrong ivs102 variable speed drives
can be used with all centrifugal pump types fitted with motors
to 450kW, in either new or existing heating and cooling applications.
IVS 102 Series Variable Speed Drives
Dedicated hvac variable speed drives designed to
reduce system complexity and capital cost in both
new and existing heating and cooling systems
Capital and Installation Cost Reduced:
• Reduced capital cost - in-built features reduce the need for ancillary
components
• Reduced installation cost - features such as the in-built mains isolator
option and flow compensation reduce wiring and time on site
• Reduced commissioning cost - intuitive interface and menu structure
makes setup easy
• Reduced plant room space cost - compact size and ip55 enclosure availability means the ivs102 can be installed in the smallest of plant rooms
Increased energy savings:
• ivs102 has a basic energy efficiency of 98%
• Paybacks lower than 12 months are possible in retrofit applications
• Automatic Energy Optimisation function accurately tunes the drive to
the pump
• Flow compensation eliminates the energy loss caused by an incorrectly
placed sensor
Project risk minimisation:
•
•
•
•
High quality product with emc filtering and in built harmonic mitigation
Units are easily matched to the pump, reducing commissioning delays
Single source responsibility for complete variable speed pumping unit
Easily connects to Building Management Systems (bms)
Ease of maintenance:
• All components are accessible from the front of the drive
• Modular design makes replacing sub-assemblies easy
• Removable terminal blocks makes disconnecting cables simple
Extended drive lifetime
The unique cooling system prevents dusty
and aggressive ambient airflow from damaging the electronics.
Terminal blocks unplug easily, should you need to disconnect control cables.
The intelligent solution for variable speed pumping with high level features as standard
Modular design
Modularity of design allows the Armstrong ivs102 to work seamlessly with
most hvac systems. Plug and play expansion options provide for simple
upgrades to meet current and future requirements.
Harmonics control
All Armstrong ivs102 drives have dual dc-link reactors, which provide a
reduction in input harmonics equal to a 5% ac line reactor without the voltage drop and efficiency losses associated with ac line reactors.
emi/rfi control
All ivs102 drives are designed to contain and control emi and rfi to en 61800-3 with additional filtering options available for even the most
sensitive installations.
Dedicated features for energy conservation in hvac systems
Automatic energy optimisation
aeo continuously monitors the pump motor speed and load
and adjusts the applied voltage to maximise energy savings.
Even at full speed, voltage will be reduced if the load is less
than 100%. This feature automatically compensates for oversized motors or systems that are not fully loaded.
Energy monitoring
The ivs102 drive provides a complete range of energy consumption information. Users can choose to divide absolute
energy consumption into hours, days or weeks, and can
choose to monitor a load profile for the application.
Flow compensation
Many variable flow, variable speed pumping systems are
installed with a differential pressure (dp) sensor mounted close
to the pump, such that when demand for heating and cooling
changes, the pump can adjust speed accordingly. With many
variable speed drive designs this would result in full pump
design head being maintained at all flows. The ideal system
design is to monitor the pressure further out in the system, as
this allows for a reduction in pump head with reducing flow
and subsequently results in significantly greater energy savings. Flow compensation is a setting in the ivs102 software
that allows the system sensor to be located close to the pump,
Series 4380 Starline IVS Sensorless
without compromising on potential150-200
energy savings. When
this parameter is set in the software,
theCoupled
ivs102Vertical
factorsIn-Line
this Centrifugal Pum
Close
into calculations, and adjusts the flow settings according to a
Control curve, as would be the case with a remotely installed
sensor.
Head
(kpa)
140
150-200 @ 198 mm
120 1450 rpm
51
1394 rpm
100
62
71
77
81
1280 rpm
82
1
80 1160 rpm
60
2
1040 rpm
3
7
Control (QPC)
77
71
4
930 rpm
40 807 rpm
81
5
6
756 rpm
20
0
580 rpm
0
10
20
30
40
50
Water, sg= 1.00
System control curve using flow compensation
60
70
80
Flow (lps)
Multi-zone control
Larger heating and cooling systems with diverse loads in
multiple zones perform better when multiple dp sensors are
installed at strategic locations in the system. This design
approach allows the variable speed pumps to better satisfy the
needs of the whole system whilst at the same time optimising
energy savings. When fitted with an i/o expansion module,
the Armstrong ivs102 has the capacity to handle three feedback signals, each with their own set point. This removes the
need for external controls and results in significantly reduced
installation costs. For systems requiring control of more than
three zones an Armstrong ips controller can be used in conjunction with ivs102 drives.
Duty/standby operation
Where two ivs102 drives are installed in a duty/standby pump
application, it is possible to interconnect the drives to provide
automatic changeover in the event of duty pump failure. The
interconnected drives will alternate the system load between
User friendly display:
• Back-lit display
• On-screen scroll bars and graphs
• International letters and signs
• Four meters can be displayed
simultaneously
the two pumps at pre-set intervals, to even out pump wear.
The drives can also send pump failure alarms to the bms. This
again reduces the need for external controls and reduces capital and installation costs.
Pump protection
The ivs102 is supplied with many standard pump protection
features, including preventative maintenance scheduling such
as mechanical seal replacement. Other features include dry
pump and end of curve protection, both of which help to prevent pump damage and improve pump longevity.
Easy to use graphical keypad
All ivs102 drives are supplied with intuitive and easy to use
interface. The keypad is used for changing parameters, fault
finding and diagnostics and monitoring operating variables
such as power consumption. Alarms and warnings are displayed in easy to understand terminology, eliminating the need
for decoding or referring to tables in manuals.
Flexible, easy menu structure
• Intuitive navigation
• Four independent setups for unmatched flexibility
• Multiple menus including a personalised quick setup menu
• Logging menu provides access to
operation history
• Changes Made log identifies previously modified parameters
• Two-level password protection
User friendly keypad
• Removable during operation
• IP65 Rating
• Easy access to all parameters
• On-board memory allows upload
from one drive and download to
another
Illumination
• Important buttons are illuminated
when active
On-board manual
• Info key provides access to help
information with on-board user
manual
Technical information
Building management system connectivity
The ivs102 variable speed drive offers unrivalled communication capabilities that reduce or eliminate the need for external devices. The drives communicate seamlessly on a serial
communications network via a simple two-wire connection.
The drive can be programmed either through the network or
through the drive keypad.
Standard protocols:
• Modbus rtu
• BACnettm
• Johnson Controls Metasys® n2
• Siemens Apogee® fln
Optional protocols:
• DeviceNet
• Profibus
Inputs/outputs
• Programmable digital inputs: 6
• Modbus tcp
Used for external signals such as start/stop or interlocks.
Environmental
Two of the six ports can be re-programmed to serve as digital
outputs.
• Temperature: 0 - 45°c
• Maximum relative humidity: 95%
Relay outputs:
Enclosure ratings:
• Programmable relay outputs: 2
•
•
•
•
ip20: 1.1 - 90kW
ip21: 1.1 - 1400kW
ip54: 110 - 1400kW
ip55: 1.1 - 90kW
• ip66: 1.1 - 90kW
(240 vac, 2a and 400 vac, 2a)
Used for alarm and drive/pump status communications.
Analogue output:
• Programmable analogue output: 1
(Current range 0/4—20mA)
Can be used to indicate operating status such as power, current or motor speed.
Analogue inputs:
• Analogue inputs: 2
• Modes: Voltage or current
• Voltage level: -10 to +10V (scalable)
• Current level: 0/4 to 20mA (scalable)
Used for feedback signals from field sensors or speed reference
from bms.
ivs102 Variable speed drive in ip55 enclosure
Options and accessories
Power options:
• Advanced harmonic filters - For critical demands on harmonic distribution
• dv/dt filters - For special demands on motor insulation
protection
• Sine filters (lc filters) - For noiseless motor
• In-built mains isolator - Reduces requirement for external
equipment and saves installation time and cost
Control options:
• Relay option card - Adds 3 additional relay outputs. These
can be used for alarms, warnings, drive status (hand/auto)
or a number of other programmable functions.
• General purpose i/o option card - Adds 3 digital inputs, 2
digital outputs, 1 analogue current output, 2 analogue voltage inputs.
• Analogue i/o option card - Adds 3 analogue outputs and 3
pt1000/ni1000 inputs.
• External 24 vdc supply option - A 24 vdc external supply
can be connected to supply control and option cards in the
event of a drive power supply failure.
Many option cards simply plug into slots under the drive keypad
• Battery backup card - Provides power for the real-time clock
during power loss.
Other Armstrong variable speed pumping solutions
ivs sensorless series pumps
Armstrong offers a range of variable speed pumps with integral drives for motors up to 55kW. This type of solution offers
a unique value proposition in variable speed pump solutions.
The Sensorless control functionality allows pressure control in
heating or chilled water systems without the need to install a
dp sensor anywhere in the system. Armstrong ivs sensorless
pumps offer the best space utilisation, and the lowest installed
cost of any variable speed solution available.
4300 ivs
4302 ivs dualARM
Multi-pump, multi-zone controls
For systems requiring greater than 3 zone control, the
Armstrong range of ips controllers can be used in conjunction
with the ivs102 drives to provide sequencing of up to 6 pumps
and 18 remote system zones.
ips 9000
ips 5000
Typical specification
Provide Armstrong ivs102 series variable speed drive (vsd)
with specification as per the following:
The vsd shall be of the vvc-pwm type, providing near unity
displacement power factor (cos phi) without the need for
external power factor correction capacitors at all loads and
speeds. The vsd shall incorporate dc link chokes for the reduction of mains borne harmonic currents to aid in compliance
with the Electricity Council’s Engineering Recommendation
g5/4 stage 2 and to reduce the dc link ripple current. The
product shall be ce marked, showing compliance with both
the emc Directive 89/336/eec and the Low Voltage Directive 72/23/eec. rfi filters shall be fitted as standard to ensure
the vsd meets the emission and immunity requirements of
en61800-3.
vsd and motor protection shall include: motor phase to phase
fault, motor phase to earth fault, loss of supply phase, over
voltage, under voltage, motor over temperature, inverter overload and over current.
The vsds shall be available in ip20/21 enclosures for incorporation into control panels or ip55 for plant room wall mounting.
Output frequency range shall be adjustable between 0-120Hz.
The vsd shall be capable of riding through a control power
loss of up to 300ms to eliminate nuisance tripping and shall
include auto-ramping feature for automatic adjustment of
the acceleration and deceleration ramp times to help prevent
nuisance trips. The vsd shall provide pid three term control for
closed loop control of pressure or flow without the need of an
external regulator. The vsd shall provide Programmable Skip
Frequencies with adjustable bandwidths to help overcome any
mechanical resonances. The motor circuit shall be capable of
unlimited switching by either a contactor or an isolator without
causing damage to the vsd. The vsd shall feature an on-board
time clock.
the pump this feature shall constantly adjust the reference to
follow the system curve. A complete range of energy monitoring information shall be provided to divide absolute energy
consumption into hours, days or weeks, or to monitor a load
profile for the application. kWh’s shall be displayed as standard
on the alphanumeric keypad.
The vsd shall provide dry pump and end of curve protection to
prevent the pump from operating without creating the desired
pressure. Under these circumstances, the drive shall stop the
pump or perform another programmed action i.e. raise an
alarm.
The vsd shall incorporate the following i/o:
• Six programmable digital inputs
• Two programmable 0-10v dc, 0/4-20mA analogue inputs
• One programmable 0/4-20mA analogue outputs for remote
monitoring of:
• Motor current
• Motor power
• Output frequency
• Two programmable volt free relays for remote monitoring of
vsd status including:
• Running
• Alarm
• Standby
The vsd shall provide an Automatic Energy Optimiser (aeo)
function to maximise energy savings by automatically matching the u/f curve to the load requirements, increasing energy
efficiency by 5 -15% at partial loads. An Automatic Motor
Adaption function shall match the vsd with the associated
motor installation to optimise performance. This feature shall
operate without spinning the motor and without the need
to decouple it from it’s load. The vsd shall provide set point
‘Flow compensation’. If a pressure sensor is mounted close to
Our policy is one of continuous improvement. We reserve the right to alter our dimensions and specifications without notice.
toronto
23 Bertrand Avenue
Toronto, Ontario
Canada, m1l 2p3
t +1 416 755 2291
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manchester
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Manchester
United Kingdom, m12 5jl
t +44 (0) 8444 145 145
f +44 (0) 8444 145 146
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